The one I have, initially came from a Kymco/Genuine dealer. The dealer had taken one of Genuines top boxes (as they made a lot of their bikes in the same colors as Kymco) and mounted it on their People50's to sell.
I could go read off the part numbers of the parts they used if you'd like. If you lived close enough I'd just give you mine, since I don't like how it looked and took it off.